While this is true (to some degree anyway), it seems qualitatively different from Congress (and then backed up by SCOTUS) explicitly banning a specific company (and explicitly banning other companies from doing specific things related to that company) and then being completely ignored by an incoming president who just says "wut? no worries, carry on tiktok".

this is not a debate about just what the intelligence community can and cannot do, or what level of enforcement and in what communities is appropriate for a given law. it is a point blank statement "i am the president, and you (tiktok) and you (google, apple) can ignore the law", made in public, without any possible national security justification (whatever level of BS that might normally come with).